Abrading-machine



wf H. sMnH. ABRADING MACHINE. APPLICATIUN FILED IAN- 13, 1921.

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@Mz/MKM W.-H. SMITH. A'BRADING MAcHmE.

APPLICATION FILED JAN.13, 19214.

PatentedSept. 13, 1921.

2 SHEETS-SHEET 2 @MU 'Wllham H Emh n wf' M WMM `tically any desired angle to the WILLIAM n. SMITH, or MILWAUKEE, WISCONSIN.

PATENT oFFl ABADlNMACHINE.

Application led January 13, 1921.

To all .whom t may concern:

Bc it known that I, WILLIAM H. SMITH, a

citizen oi the United States, and resident t of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Abrading-Machines; and `I do hereby declare that the following is a full, clear, and exact description thereof.

y invention relates to new and useful improvements in abrading machines and has special reference to those machines which employ sand or emery covered dlsks having fiat operating surfaces.` I

The princlpal object of th1s 1nvent1on 1s to provide amachine `of this character wlth a work support having means whereby the table surface thereof can be disposed at pracfiat operating face of the abrading member.

It is further an object of this invention to provide means for conveying the material removed from the articles operated upon to a suitable storage space within the supporting base or pedestal of the machine. n

An additional object of this inventlon 1s to provide a simply constructed support, havlng means for mounting a palr of abrading members together with means for slmnltaneously operatin the latter and suctlon fans which are use for carrying out the last mentioned object of the invention.

With these general objects in vlew, the 1nvention resides in the novel features of construction, combination an d arrangement of parts which will be hereinafter more particularly described and claimed andshown in the accompanying drawlngs 1n which Figure 1 represents a part elevational and part sectional view throu h a mac'hlne constructed in accordance wlth the lnvention, said section being taken substantially on the plane of the line 1--1 of Fig. 2, and

Fig. 2 is a side elevational v1ew of a machine, parts being broken away and parts in section.

In these drawings the main features of the invention are shown in a machine provided with a pair'of abrading members, ut 1t 1s obvious that they ma be employed 1n connection with single w eel machines, or those having a plurality of such wheels or abradin members.

Ilonsequently various changes may be made in the form and roportions of the different parts of the il ustrated structure,

Specification of Letters Patent.

serial No. 436,897.

invention or sacrificing any of its advanv efeiring more particularly to the drawlngs, it will be seen that the reference character 1 denotes pedestal having a cleanout opening normally covered by a plate 2 and having a pair of spaced bearing supports 3 onits top. These supports 3 mount a pair of spaced bearings 4 in which the opposite ends of a shaft 5 are journaled. The intermediate portion of the shaft in the space provided between the bearings 4 has a drive pulley 6 secured thereto to permit the machine to be operated by a suitable drive belt, and also intermediate portion of the shaft 5 is la second or driving pulley 7 vof smaller diameter than pulley 6.

The opposite ends of the shaft 5 project beyond the outer ends of the bearings 4 and have circularfabrading wheels `or disks 8 detachably mounted thereon. As is customary in machines of this character, the outer flat faces of each of the wheels 8 is covered with an abrading material'such as sand or emery. Thus the single shaft 5 simultaneously drives a pair of abrading members, and two workmen can be employed on a single machine at the Sametime.

The articles which are operated upon by the abrading wheels are supported upon tables 9, one of which is located adjacent the working face of each wheel. Inasmuch as the structure at each side of the machine .is identical, it is necessary to describe but one part thereof. With such information in view, it 'will be seen that the table 9 is secured upon the outer end of a curved supporting bar l0, the point of engagement with the table being at its outer edge portion. In other lwords the inner edge of the table is unsupported and is adjacent the working face of the cooperating abradin wheel 8, such edge is always spaced slig tly below the center of rotation of the wheel. The bar 10 is slidable in an elongated guide 11 carried by one side of the base 1 and having arcuate ribs 12 for engagement in the grooves 13 of the bar. The guide 11 is also provided with a lock plate 14 which is adapted to engage one side of the bar 10, and when moved in the proper direction by the rotation of a handle 15 will clamp the bar against the opposite side of the guide and retain the same in rigid position. In

Patentedsept. 13, 1921.

. without departing. from the principles of the l a hollow supporting base or l formed on the i ing'base 1. Y

view 'of the 'fact that the center of the arc on which the bar 10 is formed coincides with the inner or free edge of the table 9, the surface of the latter may'be moved to any angle within a range of nearly 180 degrees with the"flatworking face of the wheel 8. This movement of the table, of course, is procured When the bar 10 is permitted to slide through the guide, the table being rigidly held-in the adjusted position when said bar 10 iS clamped in its guide.

The lower portion or the wheel 8 rotates in a suitable receiving receptacle v16 formed Aof inner and outer Walls 17 and 18 respectively, the latter of which is readily removable and forms a cover plate. The lower end .of the receptacle 16 has an enlarged circular outlet opening 19 which extends laterally and opens through one wall of the support- Theoutlet passages 19 of the illustrated embodiment of the inventionv are disposed on oppositev sides of the base and are axially alined. The opposite ends of a shaft 20 are journaled in bearings 21 formed in these passages 19, and said ends are each provided with a suction fan 22. The intermediate portion of the shaft 2O extends through the lowerv end of a belt pocket 23 and carries Within saidvpoclretv a'pulley 24. The pulley 7 and the last mentioned pulley 24 are alined and adapted to have a suitable belt trained therearound wherebyv the sha-ftv 2O und the suctionfans 22 will be simultaneously actu ated with the abrading members S. (liv viously as material is removed from the articles supported on the tables 9 by the abrading members 8, it is sucked into the receiving receptacles 16 and from there through into the hollow base 1, which forms a storage compartment.

I claim:

In a device of the character described, a rotatable shaft, an abrading disk carried at each end thereof, ahousing surrouiuling 1 the lower portion of earh disk, a bifurcated receptacle between the housings, a passageway conuecting each housing with the receptacle, a second shaft extending through the furcations of the receptacle parallel to the first shaft and having its ends projecting into the passageways, means on the second shaft between the `furcations for forming a driving` connection with the first sl1aft,`and a fan mounted on each end oi' the second shaft for blowing the dust from the disks into the receptacle.

In testimony that I claim the foregoing I have hereunto set my hand at l\lil\vaukco, in the county of Milwaukee and State of Wisconsin.

IVILLIAM H. SMITH.. 

